Mathematics
Senior High
Resolved
この二つの公式で、🟰の前は同じ形式なのに、何故その後は違うんですか?
(1) x³+y³=(x+y)³-3xy(x+y)
22
2
K2
~~ 2 2~
(a+b) ca² = ab+b² = a² + b²
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理解できました!ありがとうございます!!